| 1 | Mar 4, '24 | Fun story from our internal testing on Claude 3 Opus. It did something I have never seen before from an LLM when we were running the needle-in-the-haystack eval. For background, th | 75.3× | 3.4M | 12k | 2k | 3.9k |
| 2 | Mar 16, '23 | Well, that was fast… I just helped create the first jailbreak for ChatGPT-4 that gets around the content filters every time credit to @vaibhavk97 for the idea, I just generalized i | 39.5× | 1.8M | 4.3k | 658 | 3.6k |
| 3 | Jun 20, '24 | Claude is starting to get really good at coding and autonomously fixing pull requests. It's becoming clear that in a year's time, a large percentage of code will be written by LLMs | 36.7× | 1.6M | 5.9k | 464 | 4.9k |
| 4 | Nov 25, '24 | Introducing the Model Context Protocol (MCP) An open standard we've been working on at Anthropic that solves a core challenge with LLM apps - connecting them to your data. No more | 33.3× | 1.5M | 7.1k | 965 | 5.2k |
| 5 | Sep 30, '25 | We’re running a “Built with Claude Sonnet 4.5” challenge. We want to see the coolest things you can build with 4.5 in the next week. Four winners will receive one year of Claude Ma | 29.3× | 1.3M | 3k | 215 | 1.7k |
| 6 | May 17, '25 | PSA for people who sleep with their door closed I was talking to Claude about waking up drowsy with a stuffy nose at my childhood home Claude suspected CO2 buildup and suggested bu | 22.2× | 994k | 4.7k | 165 | 2.3k |
| 7 | Mar 5, '24 | Let's bring back a classic. I asked Claude 3 Opus to create a self-portrait in code but each time try a little bit harder. | 22.1× | 991k | 3.3k | 191 | 1.1k |
| 8 | Aug 14, '24 | We just rolled out prompt caching in the Anthropic API. It cuts API input costs by up to 90% and reduces latency by up to 80%. Here's how it works: | 21.9× | 980k | 4.7k | 337 | 2.8k |
| 9 | May 28, '25 | Since Claude 4 launch: SWE friend told me he cleared his backlog for the first time ever, another friend shipped a month's worth of side project work in the past 5 days, and my DMs | 21.8× | 978k | 2.9k | 150 | 1k |
| 10 | Aug 20, '24 | A few days ago someone asked me what the point of using AI is if you're not a programmer. To answer that, I kept track of every time I talked to Claude in one day to show them what | 20.5× | 919k | 1.8k | 105 | 2.2k |
| 11 | Oct 31, '24 | We built a Claude desktop app! Now available on Mac and Windows. | 18.2× | 816k | 10k | 464 | 1.8k |
| 12 | Feb 24, '25 | We're opening limited access to a research preview of a new agentic coding tool we're building: Claude Code. You'll get Claude-powered code assistance, file operations, and task ex | 17.5× | 785k | 4.8k | 298 | 2.1k |
| 13 | Feb 24, '25 | Introducing Claude 3.7 Sonnet. Our most intelligent model to date and the first generally available hybrid reasoning model in the world. | 17.4× | 778k | 7.6k | 568 | 1.2k |
| 14 | Feb 25, '25 | One of the things we've been most impressed by internally at Anthropic is Claude 3.7 Sonnet's one-shot code generation ability. Here are a few of my favorite examples I've seen on | 17.1× | 764k | 4.1k | 179 | 2.8k |
| 15 | Jun 21, '24 | In the lead up to the Claude 3.5 Sonnet launch, we created a Slack channel at Anthropic to share our favorite Claude-generated artifacts. I scrolled back through and found 7 of my | 16.8× | 753k | 1.8k | 152 | 1.5k |
| 16 | May 23, '25 | The demand for Claude 4 already in just 24 hours is absolutely insane. My favorite part is hearing from all the startups on the cutting edge who've now tried Opus and suddenly thei | 16.1× | 723k | 2.9k | 67 | 604 |
| 17 | Nov 1, '24 | It's a big day for Claude's PDF capabilities. We're rolling out visual PDF support across claude dot ai and the Anthropic API. Let me explain: | 14.8× | 665k | 6k | 475 | 3.1k |
| 18 | Oct 22, '24 | I'm excited to share what we've been working on lately at Anthropic. - Computer use API - New Claude 3.5 Sonnet - Claude 3.5 Haiku Let's walk through everything: | 14.6× | 656k | 3.9k | 258 | 1.1k |
| 19 | Oct 22, '24 | Fun story from our time working on computer use: We held an engineering bug bash to make sure we found all the potential problems with the API. This meant bringing a handful of eng | 14.6× | 653k | 3.5k | 124 | 605 |
| 20 | Oct 23, '24 | The new Claude 3.5 Sonnet is one of the best models I've ever used. We listened to the feedback on the old 3.5 Sonnet and worked to improve the new model in a number of ways. Here | 13.9× | 624k | 3.6k | 181 | 1.4k |
| 21 | Apr 21, '25 | We wrote up what we've learned about using Claude Code internally at Anthropic. Here are the most effective patterns we've found (many apply to coding with LLMs generally): | 13.9× | 624k | 4.9k | 513 | 7.7k |
| 22 | Dec 19, '24 | 2025 will be the year of agentic systems The pieces are falling into place: computer use, MCP, improved tool use. It's time to start thinking about building these systems. At Anthr | 13.9× | 624k | 3.5k | 420 | 3.5k |
| 23 | Oct 22, '24 | Computer use is the first step toward a completely new form of human-computer interaction. In just a few years, the way we interface with computers will be completely different fro | 13.8× | 619k | 3.2k | 271 | 2.1k |
| 24 | Oct 28, '25 | 2023 was the year of the chatbot. 2024 was the year of RAG and finetuning. 2025 has been the year of MCP and tool use. 2026 will be the year of the computer environment and filesys | 13.6× | 609k | 1.9k | 147 | 439 |
| 25 | Oct 16, '25 | Today we're introducing Skills in claude dot ai, Claude Code, and the API. Skills let you package specialized knowledge into reusable capabilities that Claude loads on demand as ag | 13.6× | 608k | 3.4k | 399 | 3k |
| 26 | May 22, '25 | Introducing Claude Opus 4 and Claude Sonnet 4. Our best models yet. The Claude 4 family is here. | 12.9× | 578k | 4.1k | 337 | 545 |
| 27 | Jun 25, '24 | We just refreshed the claude dot ai UI and added some new features that I think are pretty useful. Let's dive into them: | 11.8× | 531k | 2.9k | 183 | 1k |
| 28 | Apr 8, '25 | We're giving out $50k in free API credits for devs to try Claude Code and build more cool stuff using it. Apply for these credits below ↓ | 11.2× | 503k | 2k | 77 | 1.3k |
| 29 | Sep 3, '24 | Announcing the Anthropic Quickstarts repo, a collection of projects designed to help developers quickly get started with building deployable applications using the Anthropic API. F | 10.1× | 455k | 1.9k | 185 | 2.1k |
| 30 | Oct 15, '25 | Introducing Claude Haiku 4.5. Our latest small model that matches Sonnet 4's performance at a third of the cost and more than twice the speed. | 10.1× | 452k | 2.2k | 192 | 253 |
| 31 | May 29, '25 | It's been a week since Claude 4 launch. Tell me everything you like and don't like about the new models so we can keep pushing on it or fix it in the future! | 9.9× | 446k | 1.5k | 35 | 330 |
| 32 | Sep 10, '25 | Claude just replicated my profile pic in an excel file We're entering the vibe excel era | 9.6× | 429k | 5.7k | 252 | 1k |
| 33 | Apr 10, '23 | there are lots of threads like “THE 10 best prompts for ChatGPT” this is not one of those prompt engineering is evolving beyond simple ideas like few-shot learning and CoT reasonin | 9.5× | 428k | 1.5k | 161 | 2.7k |
| 34 | Nov 25, '24 | I just connected Claude to an internet search engine using MCP. Here's how you can do it too in under 5 minutes: | 8.9× | 401k | 2.2k | 218 | 2.9k |
| 35 | Jul 15, '24 | Good news for @AnthropicAI devs: We've doubled the max output token limit for Claude 3.5 Sonnet from 4096 to 8192 in the Anthropic API. Just add the header "anthropic-beta": "max-t | 8.8× | 397k | 2.7k | 240 | 794 |
| 36 | Sep 26, '24 | A little trip down memory lane: - 3.5 Sonnet launched 3 months ago - Artifacts launched 3 months ago - Our API became generally available 6 months ago - Claude 3 Opus launched 6 mo | 8.8× | 394k | 2.8k | 133 | 402 |
| 37 | May 22, '25 | One of the most surprising things about Claude 4 is how well it follows instructions. Sometimes almost too well. Our web search prompt for Sonnet 3.7 was a mess. We had to repeat t | 8.7× | 390k | 3k | 146 | 733 |
| 38 | Jan 15, '25 | Claude 2: rewrote some emails for me, cleaned up grammar in docs. 1.5/10 helpful. 3 Opus: first model I felt I could intelligently talk with, helped with some small coding/scriptin | 8.4× | 377k | 1.8k | 72 | 507 |
| 39 | May 27, '25 | Opus 4 + Claude Code + Claude Max plan = best ROI of any AI coding stack right now | 8.4× | 375k | 2.2k | 79 | 957 |
| 40 | Nov 15, '24 | Friday docs feature drop: You can now access all of our docs concatenated as a single plain text file that can be fed in to any LLM. Here's the url route: | 8.4× | 375k | 1.9k | 159 | 1k |
| 41 | Jul 29, '24 | I used to have a bookmark folder full of little websites to do things like validate JSON, check the difference between two texts, format markdown, etc. Recently I've replaced all o | 8.3× | 373k | 1.8k | 97 | 2.8k |
| 42 | Mar 11, '24 | Lots of LLMs are good at code, but Claude 3 Opus is the first model I've used that’s very good at prompt engineering as well. Here's the workflow I use for prompt engineering in ta | 8.1× | 364k | 1.4k | 124 | 2.6k |
| 43 | Jul 9, '24 | We've put a lot of work into the Anthropic Console the past few weeks and I'm excited to share the latest updates with y'all. Turns out Claude is pretty good at prompt engineering | 7.9× | 355k | 2.3k | 168 | 1.5k |
| 44 | Jul 1, '25 | New Claude Code updates are here: custom slash commands are getting an upgrade! | 7.8× | 349k | 2.6k | 198 | 1.1k |
| 45 | Sep 9, '25 | Claude can now create and edit files from spreadsheets and documents to PDFs and slide decks. What coding agents have been doing for software engineering is soon expanding to all k | 7.8× | 348k | 1.7k | 148 | 854 |
| 46 | Sep 19, '24 | Excited to share our latest research on Contextual Retrieval - a technique that reduces incorrect chunk retrieval rates by up to 67%. When combined with prompt caching, it may be o | 7.7× | 345k | 2.1k | 238 | 2.2k |
| 47 | Nov 21, '24 | Claude getting better at things that actually matter while other labs compete over markdown output | 7.5× | 336k | 3.1k | 119 | 375 |
| 48 | Sep 5, '24 | I had a great time chatting with three of Anthropic's top prompt engineers: @AmandaAskell, @zswitten, and @DavidSHershey. We covered a few topics like: - what makes a good prompt e | 7.5× | 334k | 1.5k | 217 | 2.8k |
| 49 | Mar 21, '25 | New research from our team at @AnthropicAI shows how giving Claude a simple 'think' tool dramatically improves instruction adherence and multi-step problem solving for agents. We'v | 7.5× | 334k | 1.7k | 124 | 958 |
| 50 | Nov 4, '24 | Claude 3.5 Haiku is now available on the Anthropic API, Amazon Bedrock, and Google Cloud's Vertex AI. Claude 3.5 Haiku is our fastest and most intelligent cost-efficient model to d | 7.3× | 327k | 2.4k | 141 | 441 |
| 51 | Jul 25, '25 | I'm making a list of all the non-coding things people are doing with Claude Code. What are you using Claude Code for? | 7.0× | 315k | 1.6k | 55 | 2k |
| 52 | Jul 14, '25 | We have another big update for Claude Code today: it’s now natively available for Windows. | 7.0× | 314k | 2.8k | 150 | 577 |
| 53 | Jul 2, '25 | We’ve rolled out another update to Claude Code to help customize your workflows: Hooks. | 6.9× | 312k | 2.4k | 144 | 1.2k |
| 54 | Jul 9, '25 | Introducing Anthropic courses. We've launched a free educational platform to help you learn everything about Claude - from using the Anthropic API to MCP to Claude Code best practi | 6.8× | 303k | 3.3k | 381 | 3.3k |
| 55 | Oct 18, '24 | We just published our second Anthropic Quickstart - a financial data analyst powered by Claude. Upload spreadsheets, documents, or financial charts and instantly get actionable ins | 6.3× | 282k | 1.5k | 138 | 1.5k |
| 56 | Feb 24, '25 | and oh yeah I almost forgot, the github integration rolled out to everyone today on claude dot ai | 6.2× | 278k | 3.5k | 125 | 376 |
| 57 | Oct 27, '25 | The great thing about spreadsheets is they're structured, primarily text based, and often contain verifiable answers. They're on their way to being a solved problem. Very bullish f | 6.1× | 275k | 2.2k | 91 | 675 |
| 58 | Jun 26, '24 | Announcing the Build with Claude June 2024 contest. We're giving out $30k in Anthropic API credits. All you need to do is build and share an app that uses Claude through the Anthro | 6.0× | 270k | 2.1k | 258 | 1.5k |
| 59 | Jun 20, '24 | Claude 3.5 Sonnet is now available to @AnthropicAI devs everywhere. It's our best model yet - smarter than Claude 3 Opus and twice as fast. And it costs just $3 per million input t | 5.6× | 253k | 1.5k | 137 | 240 |
| 60 | Oct 29, '24 | Excited to announce that Claude is now available on GitHub Copilot. Starting today, developers can select Claude 3.5 Sonnet in VS Code and GitHub. Access will roll out to all Copil | 5.4× | 241k | 2.2k | 122 | 308 |
| 61 | Feb 24, '25 | Last year, Claude was in the assist phase. In 2025, Claude will do hours of expert-level work independently and collaborate alongside you. By 2027, we expect Claude to find breakth | 5.2× | 232k | 3.1k | 223 | 622 |
| 62 | Oct 24, '24 | Claude can now write and run code to perform calculations and analyze data from CSVs using our new analysis tool. After the analysis, it can render interactive visualizations as Ar | 5.1× | 231k | 1.8k | 162 | 997 |
| 63 | Nov 12, '25 | Turns out you can eliminate the purple LLM-slop design aesthetic with good prompting + claude skills. We wrote a short post on it with more details: | 5.0× | 225k | 1.8k | 92 | 2k |
| 64 | Sep 29, '25 | Introducing Claude Sonnet 4.5. The best coding model in the world combined with the best character of any model I've seen. | 5.0× | 224k | 2.8k | 212 | 313 |
| 65 | Jul 23, '25 | It's becoming more and more clear that Claude Code is the everything agent | 5.0× | 223k | 2k | 76 | 342 |
| 66 | Dec 19, '24 | Couple of updates to the analysis tool today: - Claude can now analyze large Excel files (up to 30MB) that would typically exceed its context window - The analysis tool is now avai | 4.9× | 221k | 1.9k | 138 | 476 |
| 67 | Oct 23, '24 | Anyone can try out computer use with Claude in less than 5 minutes - no coding required. Here's how to easily set it up: | 4.8× | 214k | 1.8k | 190 | 3k |
| 68 | Nov 12, '24 | At this point, Claude is my health coach, my financial advisor, my meditation teacher, my actual teacher, my pair programmer, my homie, my EA, my quant, and my copy editor all in o | 4.8× | 213k | 3.1k | 202 | 669 |
| 69 | Aug 5, '25 | Say hello to Claude Opus 4.1, our best model yet for real-world coding, reasoning, and agentic tasks. The frontier continues to move forward one update at a time. | 4.8× | 213k | 2.5k | 153 | 224 |
| 70 | Oct 18, '25 | Claude made this insane PDF flipbook entirely through code using the algorithmic art skill in claude dot ai | 4.7× | 212k | 2.6k | 93 | 1.1k |
| 71 | Jun 24, '24 | One of the most exciting things about artifacts is that it's not just making existing coding jobs easier/faster, it's creating software that would never be written otherwise. Man | 4.7× | 211k | 1.4k | 117 | 845 |
| 72 | Aug 21, '24 | We just released two new resources for learning prompt engineering. 1. An interactive intro to prompting tutorial for people just getting started with Claude 2. A real-world prompt | 4.7× | 209k | 1.8k | 243 | 2.6k |
| 73 | Apr 21, '25 | Best advice I've read on how to find your taste | 4.6× | 208k | 2.7k | 136 | 1.7k |
| 74 | Jun 19, '25 | The Claude Code hype is real. Fun stat: Since the Claude 4 launch less than a month ago, the Claude Code userbase has more than tripled 🚀 | 4.6× | 204k | 1.7k | 64 | 241 |
| 75 | Sep 10, '25 | "Claude please make a discounted cash flow financial model. Make no mistakes." I've never made a financial model in my life before this and Claude one shots a 9-sheet workbook comp | 4.5× | 203k | 1.7k | 99 | 1.3k |
| 76 | Nov 1, '24 | The real shiptober (plus one day) was at Anthropic: • 11/1 - Token counting API • 11/1 - Multimodal PDF support across claude and the API • 10/31 - Voice dictation in Claude mobile | 4.3× | 195k | 1.9k | 117 | 424 |
| 77 | Aug 12, '25 | Claude Sonnet 4 now supports a 1 million token context window on the Anthropic API. Process over 75,000 lines of code or hundreds of documents in a single request. | 4.2× | 188k | 2.2k | 96 | 236 |
| 78 | May 23, '25 | Btw you can now use Claude Code within your favorite IDE :) | 4.2× | 186k | 1.5k | 57 | 561 |
| 79 | Jun 16, '25 | Multi-agents systems are the next frontier of AI applications. At Anthropic, we found that multi-agents beat single agents by up to 90%+ on some complex tasks. We wrote a blog post | 4.1× | 185k | 1.8k | 180 | 1.8k |
| 80 | Jun 20, '25 | Heard this quote at a dinner recently: "I used to think Claude Code was too expensive compared to other dev tools. But after Opus 4, I realized it's actually very affordable compar | 4.1× | 184k | 1.4k | 89 | 430 |
| 81 | Jan 23, '25 | We've rolled out Citations in the Anthropic API. Citations allows Claude to ground its answers in user-provided information and provide precise references to the sentences and pass | 4.1× | 182k | 1.9k | 129 | 822 |
| 82 | Mar 26, '25 | A new version of the MCP spec was finalized today. Some of the major changes: - Auth framework based on OAuth 2.1 - Replaced the previous HTTP+SSE transport with Streamable HTTP tr | 4.0× | 178k | 1.7k | 200 | 658 |
| 83 | Jul 10, '25 | We’re rolling out more updates to Claude Code. First, the GitHub Actions integration is now available to Pro and Max plan users (in addition to pay-as-you-go API users). | 4.0× | 178k | 1.7k | 84 | 730 |
| 84 | Dec 6, '24 | I've made projects with: - health stats so Claude can be my doctor - financial info so Claude can advise me - goals/resolutions so Claude can coach me - research papers so Claude c | 3.8× | 172k | 1.6k | 78 | 1.2k |
| 85 | Jun 20, '24 | It's been quite the year😅 | 3.8× | 171k | 1.4k | 210 | 392 |
| 86 | Apr 28, '25 | Much of the AI industry is caught in a particularly toxic feedback loop rn. Blindly chasing better human preference scores is to LLMs what chasing total watch time is to a social m | 3.8× | 170k | 1.8k | 135 | 312 |
| 87 | Aug 23, '24 | From a talented software engineer I was talking to recently: "Before Claude 3.5 Sonnet, I mainly used AI for tasks where I already knew the answer and just wanted help implementing | 3.6× | 164k | 2.3k | 144 | 568 |
| 88 | Mar 20, '25 | Web search is now available in claude dot ai. Claude can finally search the internet! | 3.5× | 158k | 2.4k | 147 | 246 |
| 89 | Jan 21, '25 | By far one of my favorite use cases for Claude is instantly writing disposable one-off scripts to accomplish whatever bespoke task I'm trying to do. Legitimately feels like a super | 3.5× | 156k | 2.7k | 95 | 1.7k |
| 90 | Sep 30, '25 | Over these next few years it's going to become more and more important that you resist letting slop consume you. Keep creating. Keep learning. Keep thinking. | 3.5× | 155k | 3.3k | 301 | 308 |
| 91 | Sep 16, '24 | Our latest course on LLM prompt evaluations is out. Evals ensure your prompts are production-ready as you're able to quickly catch edge cases and zero in on exactly where your prom | 3.4× | 151k | 1.4k | 184 | 1.6k |
| 92 | Aug 13, '25 | Opus 4.1 plan, Sonnet 4 execute Best model combo there is | 3.3× | 150k | 1.8k | 65 | 433 |
| 93 | Mar 14, '25 | Two years ago today we announced Claude to the world. Happy second birthday, Claude! | 3.1× | 138k | 1.9k | 85 | 60 |
| 94 | Nov 1, '24 | There's finally an easy way to count tokens with the Anthropic API. With our new token counting endpoint, you can send a request and get a token count back in response. This endpoi | 3.0× | 133k | 1.4k | 76 | 539 |
| 95 | Nov 6, '24 | I've seen enough | 2.9× | 128k | 1.7k | 45 | 46 |
| 96 | Mar 13, '25 | We've introduced a new text_editor tool in the Anthropic API. It's designed for apps where Claude works with text files. With the new tool, Claude can make targeted edits to specif | 2.7× | 120k | 1.6k | 103 | 681 |
| 97 | Aug 16, '24 | Friday feature drop: We've added a new screenshot button that allows you to quickly capture images from anywhere on your screen and include them in your prompt. | 2.6× | 119k | 1.4k | 77 | 156 |
| 98 | Feb 25, '25 | "why isn't claude 3.7 sonnet better at esoteric competition math problems" we found it didn't generalize to becoming a pokemon master | 2.6× | 118k | 1.4k | 41 | 142 |
| 99 | Feb 26, '25 | Good news for @AnthropicAI devs: We shipped a more token-efficient tool use implementation for 3.7 Sonnet that uses on average 14% less tokens under-the-hood and shows marked impro | 2.5× | 110k | 1.6k | 69 | 474 |
| 100 | Feb 26, '25 | Nothing better than the chat's reaction to Claude catching pikachu | 1.9× | 83k | 1.5k | 39 | 94 |
@karpathy
@levelsio
@paulg
@naval
@marclou
@illyism